Hiring guide for Laravel Engineers

Laravel Developer Hiring Guide

Laravel is a popular open-source PHP framework, first released by Taylor Otwell in 2011, designed to facilitate the development of web applications following the model-view-controller (MVC) architectural pattern. Its source code is hosted on GitHub and is licensed under the terms of MIT License. Laravel provides a clean and elegant syntax that is easy to learn and use, making it a favorite among many web developers. It comes with extensive tools and libraries that aid in tasks such as routing, authentication, sessions, caching, and unit testing. Laravel's robust features and growing community make it a leading choice in modern web application development.

Ask the right questions secure the right Laravel talent among an increasingly shrinking pool of talent.

First 20 minutes

General Laravel app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in Laravel application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

What are migrations in Laravel?
Migrations are like version control for your database, allowing your team to modify and share the application's database schema.
How would you create a migration via artisan command?
You can create a migration using the 'php artisan make:migration' command.
What is Eloquent in Laravel?
Eloquent is Laravel's default ORM (Object-relational mapping) that provides a simple ActiveRecord implementation for working with your database.
Describe the difference between delete() and softDeletes() in Laravel.
The delete() method permanently removes a record from the database, while softDeletes() only marks the record as deleted with a timestamp but doesn't actually remove it from the database.
What are service providers in Laravel?
Service providers are the central place of all Laravel application bootstrapping. Your own application, as well as all of Laravel's core services are bootstrapped via service providers.
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What you’re looking for early on

Does the candidate have a solid understanding of Laravel's structure and its components?
Can the candidate demonstrate experience with Laravel's ORM (Eloquent)?
Has the candidate shown an ability to solve complex problems?
Does the candidate have experience with testing in Laravel?

Next 20 minutes

Specific Laravel development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

How would you register a service provider in Laravel?
You can register a service provider in the 'providers' array of the 'config/app.php' configuration file.
What is Laravel Scout?
Laravel Scout is a driver-based full-text search solution for Eloquent. It makes it easy to index and search your Eloquent models.
Describe the difference between 'get' and 'pluck' method in Laravel.
The 'get' method returns an instance of 'Illuminate\Support\Collection' containing the results where each result is an instance of the model you began the query from, while the 'pluck' method retrieves all of the values for a given key from a collection.
What is Laravel Dusk?
Laravel Dusk is a browser automation and testing API by Laravel. It provides an expressive, easy-to-use browser automation and testing API.
How would you handle exceptions in Laravel?
In Laravel, all exceptions are handled by the App\Exceptions\Handler class. This class contains two methods: report and render.
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The ideal back-end app developer

What you’re looking to see on the Laravel engineer at this point.

At this point, a skilled Laravel engineer should demonstrate strong problem-solving abilities, proficiency in Laravel programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with Laravel.

What does the following Laravel code do?
Route::get('/user', 'UserController@index');
This code defines a route that responds to HTTP GET requests at the /user URL. When a request is made to this URL, Laravel will execute the 'index' method of the 'UserController'.
What will be the output of the following Laravel code?
echo str_plural('car');
The output of this code will be 'cars'. The str_plural function is a Laravel helper function that converts a string to its plural form.
What does the following Laravel collection method do?
$collection = collect(['taylor', 'abigail', null])->filter();
This code creates a collection and removes any null values. The filter method in Laravel collections filters the collection by a given callback, removing any elements that do not pass a given truth test.
What does the following Laravel code do in terms of concurrency?
DB::transaction(function () {
 DB::table('users')->update(['votes' => 1]);
This code wraps the update operation in a database transaction. This means that if an error occurs during the update operation, all changes will be rolled back. This is useful for maintaining data integrity in concurrent environments.

Wrap-up questions

Final candidate for Laravel Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle Laravel application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What is Laravel Passport?
Laravel Passport is an OAuth2 server and API authentication package that is simple and enjoyable to use.
Describe the difference between '==', '===', and 'eq' in Laravel collections.
'==' checks for equality, '===' checks for identity (equality and same type), and 'eq' is a method on the Collection class that determines if the given value is equal to the collection.
What is Laravel Mix?
Laravel Mix is a fluent API for defining Webpack build steps for your Laravel application using several common CSS and JavaScript pre-processors.

Laravel application related

Product Perfect's Laravel development capabilities

Beyond hiring for your Laravel engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in Laravel projects, and can engage in multiple capacities.